78264771237 has 32 divisors (see below), whose sum is σ = 118727516160. Its totient is φ = 50927350320.

The previous prime is 78264771227. The next prime is 78264771239. The reversal of 78264771237 is 73217746287.

It is not a de Polignac number, because 78264771237 - 2¹¹ = 78264769189 is a prime.

It is a super-2 number, since 2×78264771237² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78264771239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1684918 + ... + 1730744.

It is an arithmetic number, because the mean of its divisors is an integer number (3710234880).

Almost surely, 2^78264771237 is an apocalyptic number.

It is an amenable number.

78264771237 is a deficient number, since it is larger than the sum of its proper divisors (40462744923).

78264771237 is a wasteful number, since it uses less digits than its factorization.

78264771237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47350 (or 47344 counting only the distinct ones).

The product of its digits is 5531904, while the sum is 54.

The spelling of 78264771237 in words is "seventy-eight billion, two hundred sixty-four million, seven hundred seventy-one thousand, two hundred thirty-seven".