77000000007 has 16 divisors (see below), whose sum is σ = 117410423040. Its totient is φ = 43971091392.

The previous prime is 76999999981. The next prime is 77000000023. The reversal of 77000000007 is 70000000077.

It is not a de Polignac number, because 77000000007 - 2⁶ = 76999999943 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 77000000007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77000000027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1171782 + ... + 1235747.

It is an arithmetic number, because the mean of its divisors is an integer number (7338151440).

Almost surely, 2^77000000007 is an apocalyptic number.

77000000007 is a deficient number, since it is larger than the sum of its proper divisors (40410423033).

77000000007 is a wasteful number, since it uses less digits than its factorization.

77000000007 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2409062.

The product of its (nonzero) digits is 343, while the sum is 21.

The spelling of 77000000007 in words is "seventy-seven billion, seven", and thus it is an aban number and an uban number.