78333021271956 has 24 divisors (see below), whose sum is σ = 199393145056224. Its totient is φ = 23737279173280.

The previous prime is 78333021271943. The next prime is 78333021271957. The reversal of 78333021271956 is 65917212033387.

It is a super-2 number, since 2×78333021271956² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78333021271896 and 78333021271905.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78333021271957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 296715989535 + ... + 296715989798.

It is an arithmetic number, because the mean of its divisors is an integer number (8308047710676).

Almost surely, 2^{78333021271956} is an apocalyptic number.

It is an amenable number.

78333021271956 is an abundant number, since it is smaller than the sum of its proper divisors (121060123784268).

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

78333021271956 is a wasteful number, since it uses less digits than its factorization.

78333021271956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593431979351 (or 593431979349 counting only the distinct ones).

The product of its (nonzero) digits is 11430720, while the sum is 57.

The spelling of 78333021271956 in words is "seventy-eight trillion, three hundred thirty-three billion, twenty-one million, two hundred seventy-one thousand, nine hundred fifty-six".