77402888745 has 64 divisors (see below), whose sum is σ = 152587653120. Its totient is φ = 32627282688.

The previous prime is 77402888743. The next prime is 77402888777. The reversal of 77402888745 is 54788820477.

It is not a de Polignac number, because 77402888745 - 2¹ = 77402888743 is a prime.

It is not an unprimeable number, because it can be changed into a prime (77402888743) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1262716 + ... + 1322594.

It is an arithmetic number, because the mean of its divisors is an integer number (2384182080).

Almost surely, 2^77402888745 is an apocalyptic number.

It is an amenable number.

77402888745 is a deficient number, since it is larger than the sum of its proper divisors (75184764375).

77402888745 is a wasteful number, since it uses less digits than its factorization.

77402888745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60854.

The product of its (nonzero) digits is 28098560, while the sum is 60.

The spelling of 77402888745 in words is "seventy-seven billion, four hundred two million, eight hundred eighty-eight thousand, seven hundred forty-five".