60891077891 has 6 divisors (see below), whose sum is σ = 70832478420. Its totient is φ = 52192352436.

The previous prime is 60891077873. The next prime is 60891077941. The reversal of 60891077891 is 19877019806.

It is not a de Polignac number, because 60891077891 - 2²² = 60886883587 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (60891077791) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 621337481 + ... + 621337578.

It is an arithmetic number, because the mean of its divisors is an integer number (11805413070).

Almost surely, 2^60891077891 is an apocalyptic number.

60891077891 is a deficient number, since it is larger than the sum of its proper divisors (9941400529).

60891077891 is a wasteful number, since it uses less digits than its factorization.

60891077891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1242675073 (or 1242675066 counting only the distinct ones).

The product of its (nonzero) digits is 1524096, while the sum is 56.

The spelling of 60891077891 in words is "sixty billion, eight hundred ninety-one million, seventy-seven thousand, eight hundred ninety-one".