61458429121 has 16 divisors (see below), whose sum is σ = 66173414400. Its totient is φ = 56871779328.

The previous prime is 61458429119. The next prime is 61458429181. The reversal of 61458429121 is 12192485416.

61458429121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 61458429121 - 2¹ = 61458429119 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (61458429181) 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, 225241 + ... + 416713.

It is an arithmetic number, because the mean of its divisors is an integer number (4135838400).

Almost surely, 2^61458429121 is an apocalyptic number.

It is an amenable number.

61458429121 is a deficient number, since it is larger than the sum of its proper divisors (4714985279).

61458429121 is a wasteful number, since it uses less digits than its factorization.

61458429121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 191808.

The product of its digits is 138240, while the sum is 43.

The spelling of 61458429121 in words is "sixty-one billion, four hundred fifty-eight million, four hundred twenty-nine thousand, one hundred twenty-one".