27777672402 has 16 divisors (see below), whose sum is σ = 58479310560. Its totient is φ = 8771896512.

The previous prime is 27777672397. The next prime is 27777672409. The reversal of 27777672402 is 20427677772.

It is not an unprimeable number, because it can be changed into a prime (27777672409) 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, 121831783 + ... + 121832010.

It is an arithmetic number, because the mean of its divisors is an integer number (3654956910).

Almost surely, 2^27777672402 is an apocalyptic number.

27777672402 is an abundant number, since it is smaller than the sum of its proper divisors (30701638158).

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

27777672402 is a wasteful number, since it uses less digits than its factorization.

27777672402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243663817.

The product of its (nonzero) digits is 3226944, while the sum is 51.

The spelling of 27777672402 in words is "twenty-seven billion, seven hundred seventy-seven million, six hundred seventy-two thousand, four hundred two".