78370350420 has 96 divisors (see below), whose sum is σ = 236364226560. Its totient is φ = 19345265280.

The previous prime is 78370350419. The next prime is 78370350437. The reversal of 78370350420 is 2405307387.

It is a super-2 number, since 2×78370350420² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 873190 + ... + 958749.

It is an arithmetic number, because the mean of its divisors is an integer number (2462127360).

Almost surely, 2^78370350420 is an apocalyptic number.

It is an amenable number.

78370350420 is an abundant number, since it is smaller than the sum of its proper divisors (157993876140).

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

78370350420 is a wasteful number, since it uses less digits than its factorization.

78370350420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1832005 (or 1832003 counting only the distinct ones).

The product of its (nonzero) digits is 141120, while the sum is 39.

The spelling of 78370350420 in words is "seventy-eight billion, three hundred seventy million, three hundred fifty thousand, four hundred twenty".