61491546762 has 32 divisors (see below), whose sum is σ = 129782068800. Its totient is φ = 19369456128.

The previous prime is 61491546757. The next prime is 61491546769. The reversal of 61491546762 is 26764519416.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (61491546769) 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, 634087 + ... + 724602.

It is an arithmetic number, because the mean of its divisors is an integer number (4055689650).

Almost surely, 2^61491546762 is an apocalyptic number.

61491546762 is an abundant number, since it is smaller than the sum of its proper divisors (68290522038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

61491546762 is a wasteful number, since it uses less digits than its factorization.

61491546762 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1359110.

The product of its digits is 2177280, while the sum is 51.

The spelling of 61491546762 in words is "sixty-one billion, four hundred ninety-one million, five hundred forty-six thousand, seven hundred sixty-two".