61842921290 has 16 divisors (see below), whose sum is σ = 111540348000. Its totient is φ = 24687593040.

The previous prime is 61842921281. The next prime is 61842921319. The reversal of 61842921290 is 9212924816.

It is a super-2 number, since 2×61842921290² (a number of 22 digits) contains 22 as substring.

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, 6191696 + ... + 6201675.

It is an arithmetic number, because the mean of its divisors is an integer number (6971271750).

Almost surely, 2^61842921290 is an apocalyptic number.

61842921290 is a deficient number, since it is larger than the sum of its proper divisors (49697426710).

61842921290 is a wasteful number, since it uses less digits than its factorization.

61842921290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12393877.

The product of its (nonzero) digits is 124416, while the sum is 44.

The spelling of 61842921290 in words is "sixty-one billion, eight hundred forty-two million, nine hundred twenty-one thousand, two hundred ninety".