77479863553 has 8 divisors (see below), whose sum is σ = 77590519488. Its totient is φ = 77369289264.

The previous prime is 77479863551. The next prime is 77479863563. The reversal of 77479863553 is 35536897477.

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

It is a cyclic number.

It is not a de Polignac number, because 77479863553 - 2¹ = 77479863551 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (77479863551) 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, 2021950 + ... + 2059912.

It is an arithmetic number, because the mean of its divisors is an integer number (9698814936).

Almost surely, 2^77479863553 is an apocalyptic number.

It is an amenable number.

77479863553 is a deficient number, since it is larger than the sum of its proper divisors (110655935).

77479863553 is a wasteful number, since it uses less digits than its factorization.

77479863553 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40823.

The product of its digits is 133358400, while the sum is 64.

The spelling of 77479863553 in words is "seventy-seven billion, four hundred seventy-nine million, eight hundred sixty-three thousand, five hundred fifty-three".