77020415232620 has 24 divisors (see below), whose sum is σ = 161745338423088. Its totient is φ = 30807696296000.

The previous prime is 77020415232487. The next prime is 77020415232643. The reversal of 77020415232620 is 2623251402077.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28016471 + ... + 30642510.

It is an arithmetic number, because the mean of its divisors is an integer number (6739389100962).

Almost surely, 2^{77020415232620} is an apocalyptic number.

It is an amenable number.

77020415232620 is an abundant number, since it is smaller than the sum of its proper divisors (84724923190468).

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

77020415232620 is a wasteful number, since it uses less digits than its factorization.

77020415232620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58724641 (or 58724639 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 41.

Adding to 77020415232620 its reverse (2623251402077), we get a palindrome (79643666634697).

The spelling of 77020415232620 in words is "seventy-seven trillion, twenty billion, four hundred fifteen million, two hundred thirty-two thousand, six hundred twenty".