77144625075477 has 8 divisors (see below), whose sum is σ = 102859704160416. Its totient is φ = 51429648020432.

The previous prime is 77144625075461. The next prime is 77144625075503. The reversal of 77144625075477 is 77457052644177.

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 77144625075477 - 2⁴ = 77144625075461 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77144625075407) 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, 23725458 + ... + 26780339.

It is an arithmetic number, because the mean of its divisors is an integer number (12857463020052).

Almost surely, 2^{77144625075477} is an apocalyptic number.

It is an amenable number.

77144625075477 is a deficient number, since it is larger than the sum of its proper divisors (25715079084939).

77144625075477 is a wasteful number, since it uses less digits than its factorization.

77144625075477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51014947.

The product of its (nonzero) digits is 322694400, while the sum is 66.

The spelling of 77144625075477 in words is "seventy-seven trillion, one hundred forty-four billion, six hundred twenty-five million, seventy-five thousand, four hundred seventy-seven".