27770000402 has 4 divisors (see below), whose sum is σ = 41655000606. Its totient is φ = 13885000200.

The previous prime is 27770000371. The next prime is 27770000413. The reversal of 27770000402 is 20400007772.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24173719441 + 3596280961 = 155479^2 + 59969^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6942500099 + ... + 6942500102.

Almost surely, 2^27770000402 is an apocalyptic number.

27770000402 is a deficient number, since it is larger than the sum of its proper divisors (13885000204).

27770000402 is a wasteful number, since it uses less digits than its factorization.

27770000402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13885000203.

The product of its (nonzero) digits is 5488, while the sum is 29.

The spelling of 27770000402 in words is "twenty-seven billion, seven hundred seventy million, four hundred two", and thus it is an aban number.