78963201654 has 16 divisors (see below), whose sum is σ = 157979846448. Its totient is φ = 26312160032.

The previous prime is 78963201649. The next prime is 78963201659. The reversal of 78963201654 is 45610236987.

It is an interprime number because it is at equal distance from previous prime (78963201649) and next prime (78963201659).

It is a junction number, because it is equal to n+sod(n) for n = 78963201597 and 78963201606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78963201659) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2207577 + ... + 2243060.

It is an arithmetic number, because the mean of its divisors is an integer number (9873740403).

It is a 2-persistent number, because it is pandigital, and so is 2⋅78963201654 = 157926403308, but 3⋅78963201654 = 236889604962 is not.

Almost surely, 2^78963201654 is an apocalyptic number.

78963201654 is an abundant number, since it is smaller than the sum of its proper divisors (79016644794).

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

78963201654 is a wasteful number, since it uses less digits than its factorization.

78963201654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4453599.

The product of its (nonzero) digits is 2177280, while the sum is 51.

The spelling of 78963201654 in words is "seventy-eight billion, nine hundred sixty-three million, two hundred one thousand, six hundred fifty-four".