61397892186 has 8 divisors (see below), whose sum is σ = 122795784384. Its totient is φ = 20465964060.

The previous prime is 61397892139. The next prime is 61397892253. The reversal of 61397892186 is 68129879316.

It is a sphenic number, since it is the product of 3 distinct primes.

61397892186 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5116491010 + ... + 5116491021.

It is an arithmetic number, because the mean of its divisors is an integer number (15349473048).

Almost surely, 2^61397892186 is an apocalyptic number.

61397892186 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

61397892186 is a wasteful number, since it uses less digits than its factorization.

61397892186 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10232982036.

The product of its digits is 7838208, while the sum is 60.

It can be divided in two parts, 6139 and 7892186, that added together give a triangular number (7898325 = T₃₉₇₄).

The spelling of 61397892186 in words is "sixty-one billion, three hundred ninety-seven million, eight hundred ninety-two thousand, one hundred eighty-six".