2011467100644 has 27 divisors (see below), whose sum is σ = 5084563348137. Its totient is φ = 670486197024.

The previous prime is 2011467100631. The next prime is 2011467100649. The reversal of 2011467100644 is 4460017641102.

It is a happy number.

The square root of 2011467100644 is 1418262.

It is a perfect power (a square), and thus also a powerful number.

2011467100644 is a `hidden beast` number, since 2 + 0 + 1 + 1 + 4 + 6 + 7 + 1 + 0 + 0 + 644 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1691690422500 + 319776678144 = 1300650^2 + 565488^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 2011467100599 and 2011467100608.

It is not an unprimeable number, because it can be changed into a prime (2011467100649) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 8391384 + ... + 8627760.

Almost surely, 2^{2011467100644} is an apocalyptic number.

2011467100644 is the 1418262-nd square number.

It is an amenable number.

2011467100644 is an abundant number, since it is smaller than the sum of its proper divisors (3073096247493).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2011467100644 is an frugal number, since it uses more digits than its factorization.

2011467100644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 472764 (or 236382 counting only the distinct ones).

The product of its (nonzero) digits is 32256, while the sum is 36.

Multiplying 2011467100644 by its sum of digits (36), we get a square (72412815623184 = 8509572²).

2011467100644 divided by its sum of digits (36) gives a square (55874086129 = 236377²).

The spelling of 2011467100644 in words is "two trillion, eleven billion, four hundred sixty-seven million, one hundred thousand, six hundred forty-four".