61428113110989 has 96 divisors (see below), whose sum is σ = 94259071779840. Its totient is φ = 39516676924032.

The previous prime is 61428113110933. The next prime is 61428113111017. The reversal of 61428113110989 is 98901131182416.

61428113110989 is a `hidden beast` number, since 6 + 1 + 428 + 1 + 1 + 31 + 109 + 89 = 666.

It is not a de Polignac number, because 61428113110989 - 2²¹ = 61428111013837 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61428113010989) 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, 15330198424 + ... + 15330202430.

It is an arithmetic number, because the mean of its divisors is an integer number (981865331040).

Almost surely, 2^{61428113110989} is an apocalyptic number.

It is an amenable number.

61428113110989 is a deficient number, since it is larger than the sum of its proper divisors (32830958668851).

61428113110989 is a wasteful number, since it uses less digits than its factorization.

61428113110989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5904 (or 5809 counting only the distinct ones).

The product of its (nonzero) digits is 746496, while the sum is 54.

The spelling of 61428113110989 in words is "sixty-one trillion, four hundred twenty-eight billion, one hundred thirteen million, one hundred ten thousand, nine hundred eighty-nine".