61903639004 has 12 divisors (see below), whose sum is σ = 108376845024. Its totient is φ = 30938826144.

The previous prime is 61903639003. The next prime is 61903639079. The reversal of 61903639004 is 40093630916.

It is a super-2 number, since 2×61903639004² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (61903639003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3237617 + ... + 3256680.

It is an arithmetic number, because the mean of its divisors is an integer number (9031403752).

Almost surely, 2^61903639004 is an apocalyptic number.

It is an amenable number.

61903639004 is a deficient number, since it is larger than the sum of its proper divisors (46473206020).

61903639004 is a wasteful number, since it uses less digits than its factorization.

61903639004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6496684 (or 6496682 counting only the distinct ones).

The product of its (nonzero) digits is 104976, while the sum is 41.

The spelling of 61903639004 in words is "sixty-one billion, nine hundred three million, six hundred thirty-nine thousand, four".