61213492692 has 240 divisors, whose sum is σ = 182659276800. Its totient is φ = 17694642240.

The previous prime is 61213492657. The next prime is 61213492721. The reversal of 61213492692 is 29629431216.

61213492692 is a `hidden beast` number, since 61 + 2 + 13 + 492 + 6 + 92 = 666.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 39263809 + ... + 39265367.

It is an arithmetic number, because the mean of its divisors is an integer number (761080320).

Almost surely, 2^61213492692 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 61213492692, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91329638400).

61213492692 is an abundant number, since it is smaller than the sum of its proper divisors (121445784108).

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

61213492692 is a wasteful number, since it uses less digits than its factorization.

61213492692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2088 (or 2077 counting only the distinct ones).

The product of its digits is 279936, while the sum is 45.

The spelling of 61213492692 in words is "sixty-one billion, two hundred thirteen million, four hundred ninety-two thousand, six hundred ninety-two".