87293644293 has 16 divisors (see below), whose sum is σ = 119143069760. Its totient is φ = 56821008384.

The previous prime is 87293644259. The next prime is 87293644303. The reversal of 87293644293 is 39244639278.

It is not a de Polignac number, because 87293644293 - 2⁸ = 87293644037 is a prime.

It is a super-2 number, since 2×87293644293² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87293644393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221055 + ... + 472707.

It is an arithmetic number, because the mean of its divisors is an integer number (7446441860).

Almost surely, 2^87293644293 is an apocalyptic number.

It is an amenable number.

87293644293 is a deficient number, since it is larger than the sum of its proper divisors (31849425467).

87293644293 is a wasteful number, since it uses less digits than its factorization.

87293644293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 254388.

The product of its digits is 15676416, while the sum is 57.

The spelling of 87293644293 in words is "eighty-seven billion, two hundred ninety-three million, six hundred forty-four thousand, two hundred ninety-three".