77393520501 has 8 divisors (see below), whose sum is σ = 112572393504. Its totient is φ = 46905163920.

The previous prime is 77393520431. The next prime is 77393520539. The reversal of 77393520501 is 10502539377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 77393520501 - 2²² = 77389326197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77393522501) 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, 1172629066 + ... + 1172629131.

It is an arithmetic number, because the mean of its divisors is an integer number (14071549188).

Almost surely, 2^77393520501 is an apocalyptic number.

It is an amenable number.

77393520501 is a deficient number, since it is larger than the sum of its proper divisors (35178873003).

77393520501 is a wasteful number, since it uses less digits than its factorization.

77393520501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2345258211.

The product of its (nonzero) digits is 198450, while the sum is 42.

The spelling of 77393520501 in words is "seventy-seven billion, three hundred ninety-three million, five hundred twenty thousand, five hundred one".