61402713390 has 80 divisors (see below), whose sum is σ = 170431113600. Its totient is φ = 15845855040.

The previous prime is 61402713371. The next prime is 61402713413. The reversal of 61402713390 is 9331720416.

61402713390 is a `hidden beast` number, since 614 + 0 + 2 + 7 + 1 + 3 + 39 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 1197565 + ... + 1247784.

It is an arithmetic number, because the mean of its divisors is an integer number (2130388920).

Almost surely, 2^61402713390 is an apocalyptic number.

61402713390 is an abundant number, since it is smaller than the sum of its proper divisors (109028400210).

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

61402713390 is a wasteful number, since it uses less digits than its factorization.

61402713390 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2445399 (or 2445390 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The spelling of 61402713390 in words is "sixty-one billion, four hundred two million, seven hundred thirteen thousand, three hundred ninety".