77807998540426 has 32 divisors (see below), whose sum is σ = 145511550864000. Its totient is φ = 30314702822400.

The previous prime is 77807998540381. The next prime is 77807998540453. The reversal of 77807998540426 is 62404589970877.

It is a super-2 number, since 2×77807998540426² (a number of 29 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 58672606 + ... + 59984086.

It is an arithmetic number, because the mean of its divisors is an integer number (4547235964500).

Almost surely, 2^{77807998540426} is an apocalyptic number.

77807998540426 is a deficient number, since it is larger than the sum of its proper divisors (67703552323574).

77807998540426 is a wasteful number, since it uses less digits than its factorization.

77807998540426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1696750.

The product of its (nonzero) digits is 1706987520, while the sum is 76.

The spelling of 77807998540426 in words is "seventy-seven trillion, eight hundred seven billion, nine hundred ninety-eight million, five hundred forty thousand, four hundred twenty-six".