78249959037 has 20 divisors (see below), whose sum is σ = 120662624896. Its totient is φ = 50483842920.

The previous prime is 78249959017. The next prime is 78249959041. The reversal of 78249959037 is 73095994287.

78249959037 is a `hidden beast` number, since 7 + 8 + 2 + 4 + 9 + 9 + 590 + 37 = 666.

It is not a de Polignac number, because 78249959037 - 2¹² = 78249954941 is a prime.

It is a super-2 number, since 2×78249959037² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78249959017) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 15578923 + ... + 15583944.

Almost surely, 2^78249959037 is an apocalyptic number.

It is an amenable number.

78249959037 is a deficient number, since it is larger than the sum of its proper divisors (42412665859).

78249959037 is a wasteful number, since it uses less digits than its factorization.

78249959037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31162910 (or 31162901 counting only the distinct ones).

The product of its (nonzero) digits is 34292160, while the sum is 63.

The spelling of 78249959037 in words is "seventy-eight billion, two hundred forty-nine million, nine hundred fifty-nine thousand, thirty-seven".