71777777130 has 64 divisors (see below), whose sum is σ = 191484103680. Its totient is φ = 19133070912.

The previous prime is 71777777107. The next prime is 71777777147. The reversal of 71777777130 is 3177777717.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 638407 + ... + 742373.

It is an arithmetic number, because the mean of its divisors is an integer number (2991939120).

Almost surely, 2^71777777130 is an apocalyptic number.

71777777130 is an abundant number, since it is smaller than the sum of its proper divisors (119706326550).

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

71777777130 is a wasteful number, since it uses less digits than its factorization.

71777777130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106540 (or 106534 counting only the distinct ones).

The product of its (nonzero) digits is 2470629, while the sum is 54.

The spelling of 71777777130 in words is "seventy-one billion, seven hundred seventy-seven million, seven hundred seventy-seven thousand, one hundred thirty".