61494487574 has 16 divisors (see below), whose sum is σ = 99365310240. Its totient is φ = 28374053760.

The previous prime is 61494487573. The next prime is 61494487589. The reversal of 61494487574 is 47578449416.

61494487574 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61494487573) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 239747 + ... + 424814.

It is an arithmetic number, because the mean of its divisors is an integer number (6210331890).

Almost surely, 2^61494487574 is an apocalyptic number.

61494487574 is a deficient number, since it is larger than the sum of its proper divisors (37870822666).

61494487574 is a wasteful number, since it uses less digits than its factorization.

61494487574 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 668135.

The product of its digits is 27095040, while the sum is 59.

The spelling of 61494487574 in words is "sixty-one billion, four hundred ninety-four million, four hundred eighty-seven thousand, five hundred seventy-four".