2661463262064 has 40 divisors (see below), whose sum is σ = 6877576441360. Its totient is φ = 886879623168.

The previous prime is 2661463262057. The next prime is 2661463262077. The reversal of 2661463262064 is 4602623641662.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8430817 + ... + 8740800.

It is an arithmetic number, because the mean of its divisors is an integer number (171939411034).

Almost surely, 2^{2661463262064} is an apocalyptic number.

2661463262064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2661463262064 is an abundant number, since it is smaller than the sum of its proper divisors (4216113179296).

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

2661463262064 is a wasteful number, since it uses less digits than its factorization.

2661463262064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17174857 (or 17174851 counting only the distinct ones).

The product of its (nonzero) digits is 2985984, while the sum is 48.

The spelling of 2661463262064 in words is "two trillion, six hundred sixty-one billion, four hundred sixty-three million, two hundred sixty-two thousand, sixty-four".