77212127272402 has 16 divisors (see below), whose sum is σ = 116198574287040. Its totient is φ = 38479467760432.

The previous prime is 77212127272337. The next prime is 77212127272451. The reversal of 77212127272402 is 20427272121277.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48867652 + ... + 50422927.

It is an arithmetic number, because the mean of its divisors is an integer number (7262410892940).

Almost surely, 2^{77212127272402} is an apocalyptic number.

77212127272402 is a deficient number, since it is larger than the sum of its proper divisors (38986447014638).

77212127272402 is a wasteful number, since it uses less digits than its factorization.

77212127272402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99291857.

The product of its (nonzero) digits is 614656, while the sum is 46.

Adding to 77212127272402 its reverse (20427272121277), we get a palindrome (97639399393679).

The spelling of 77212127272402 in words is "seventy-seven trillion, two hundred twelve billion, one hundred twenty-seven million, two hundred seventy-two thousand, four hundred two".