78858176061 has 96 divisors (see below), whose sum is σ = 131459801088. Its totient is φ = 41140794240.

The previous prime is 78858176017. The next prime is 78858176077. The reversal of 78858176061 is 16067185887.

It is not a de Polignac number, because 78858176061 - 2⁹ = 78858175549 is a prime.

It is a super-2 number, since 2×78858176061² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (57) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a junction number, because it is equal to n+sod(n) for n = 78858175992 and 78858176010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78858176561) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 72147831 + ... + 72148923.

It is an arithmetic number, because the mean of its divisors is an integer number (1369372928).

Almost surely, 2^78858176061 is an apocalyptic number.

It is an amenable number.

78858176061 is a deficient number, since it is larger than the sum of its proper divisors (52601625027).

78858176061 is a wasteful number, since it uses less digits than its factorization.

78858176061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1479 (or 1460 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 57.

The spelling of 78858176061 in words is "seventy-eight billion, eight hundred fifty-eight million, one hundred seventy-six thousand, sixty-one".