77007226157264 has 40 divisors (see below), whose sum is σ = 161701969448040. Its totient is φ = 35315415802368.

The previous prime is 77007226157201. The next prime is 77007226157291. The reversal of 77007226157264 is 46275162270077.

It can be written as a sum of positive squares in 4 ways, for example, as 5425135372864 + 71582090784400 = 2329192^2 + 8460620^2 .

It is a super-2 number, since 2×77007226157264² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

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, 1179034379 + ... + 1179099690.

It is an arithmetic number, because the mean of its divisors is an integer number (4042549236201).

Almost surely, 2^{77007226157264} is an apocalyptic number.

It is an amenable number.

77007226157264 is an abundant number, since it is smaller than the sum of its proper divisors (84694743290776).

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

77007226157264 is a wasteful number, since it uses less digits than its factorization.

77007226157264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358134247 (or 2358134241 counting only the distinct ones).

The product of its (nonzero) digits is 13829760, while the sum is 56.

The spelling of 77007226157264 in words is "seventy-seven trillion, seven billion, two hundred twenty-six million, one hundred fifty-seven thousand, two hundred sixty-four".