1801176987645 has 96 divisors (see below), whose sum is σ = 3685169509632. Its totient is φ = 796792329216.

The previous prime is 1801176987629. The next prime is 1801176987667. The reversal of 1801176987645 is 5467896711081.

It is not a de Polignac number, because 1801176987645 - 2⁴ = 1801176987629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 479782 + ... + 1957688.

It is an arithmetic number, because the mean of its divisors is an integer number (38387182392).

Almost surely, 2^{1801176987645} is an apocalyptic number.

1801176987645 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1801176987645 is an abundant number, since it is smaller than the sum of its proper divisors (1883992521987).

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

1801176987645 is a wasteful number, since it uses less digits than its factorization.

1801176987645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478051 (or 1478048 counting only the distinct ones).

The product of its (nonzero) digits is 20321280, while the sum is 63.

The spelling of 1801176987645 in words is "one trillion, eight hundred one billion, one hundred seventy-six million, nine hundred eighty-seven thousand, six hundred forty-five".