87293799739278 has 48 divisors (see below), whose sum is σ = 206366138784000. Its totient is φ = 26448135895440.

The previous prime is 87293799739277. The next prime is 87293799739427.

87293799739278 is a `hidden beast` number, since 8 + 72 + 93 + 79 + 97 + 39 + 278 = 666.

87293799739278 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×87293799739278² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87293799739273) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36596728 + ... + 38908971.

It is an arithmetic number, because the mean of its divisors is an integer number (4299294558000).

Almost surely, 2^{87293799739278} is an apocalyptic number.

87293799739278 is an abundant number, since it is smaller than the sum of its proper divisors (119072339044722).

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

87293799739278 is a wasteful number, since it uses less digits than its factorization.

87293799739278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75511557 (or 75511554 counting only the distinct ones).

The product of its digits is 36294822144, while the sum is 90.

The spelling of 87293799739278 in words is "eighty-seven trillion, two hundred ninety-three billion, seven hundred ninety-nine million, seven hundred thirty-nine thousand, two hundred seventy-eight".