61454257870 has 32 divisors (see below), whose sum is σ = 111628520928. Its totient is φ = 24357193728.

The previous prime is 61454257861. The next prime is 61454257871. The reversal of 61454257870 is 7875245416.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61454257871) 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, 5980477 + ... + 5990743.

It is an arithmetic number, because the mean of its divisors is an integer number (3488391279).

Almost surely, 2^61454257870 is an apocalyptic number.

61454257870 is a deficient number, since it is larger than the sum of its proper divisors (50174263058).

61454257870 is a wasteful number, since it uses less digits than its factorization.

61454257870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15684.

The product of its (nonzero) digits is 1881600, while the sum is 49.

The spelling of 61454257870 in words is "sixty-one billion, four hundred fifty-four million, two hundred fifty-seven thousand, eight hundred seventy".