61256652406 has 16 divisors (see below), whose sum is σ = 92167966800. Its totient is φ = 30534035040.

The previous prime is 61256652343. The next prime is 61256652407. The reversal of 61256652406 is 60425665216.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61256652407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6163261 + ... + 6173191.

It is an arithmetic number, because the mean of its divisors is an integer number (5760497925).

Almost surely, 2^61256652406 is an apocalyptic number.

61256652406 is a deficient number, since it is larger than the sum of its proper divisors (30911314394).

61256652406 is a wasteful number, since it uses less digits than its factorization.

61256652406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19119.

The product of its (nonzero) digits is 518400, while the sum is 43.

The spelling of 61256652406 in words is "sixty-one billion, two hundred fifty-six million, six hundred fifty-two thousand, four hundred six".