78513919701 has 16 divisors (see below), whose sum is σ = 119708563584. Its totient is φ = 44839482624.

The previous prime is 78513919699. The next prime is 78513919703. The reversal of 78513919701 is 10791931587.

It is an interprime number because it is at equal distance from previous prime (78513919699) and next prime (78513919703).

It is not a de Polignac number, because 78513919701 - 2¹ = 78513919699 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78513919703) 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, 1029576 + ... + 1103201.

It is an arithmetic number, because the mean of its divisors is an integer number (7481785224).

Almost surely, 2^78513919701 is an apocalyptic number.

It is an amenable number.

78513919701 is a deficient number, since it is larger than the sum of its proper divisors (41194643883).

78513919701 is a wasteful number, since it uses less digits than its factorization.

78513919701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2134540.

The product of its (nonzero) digits is 476280, while the sum is 51.

The spelling of 78513919701 in words is "seventy-eight billion, five hundred thirteen million, nine hundred nineteen thousand, seven hundred one".