61487574877730 has 16 divisors (see below), whose sum is σ = 111420437700600. Its totient is φ = 24429962635392.

The previous prime is 61487574877727. The next prime is 61487574877789. The reversal of 61487574877730 is 3777847578416.

It can be written as a sum of positive squares in 4 ways, for example, as 21418763497681 + 40068811380049 = 4628041^2 + 6329993^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20633412899 + ... + 20633415878.

Almost surely, 2^{61487574877730} is an apocalyptic number.

61487574877730 is a deficient number, since it is larger than the sum of its proper divisors (49932862822870).

61487574877730 is a wasteful number, since it uses less digits than its factorization.

61487574877730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41266828933.

The product of its (nonzero) digits is 1548933120, while the sum is 74.

The spelling of 61487574877730 in words is "sixty-one trillion, four hundred eighty-seven billion, five hundred seventy-four million, eight hundred seventy-seven thousand, seven hundred thirty".