61249769408 has 14 divisors (see below), whose sum is σ = 121542511296. Its totient is φ = 30624884672.

The previous prime is 61249769323. The next prime is 61249769437. The reversal of 61249769408 is 80496794216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 478513760 + ... + 478513887.

Almost surely, 2^61249769408 is an apocalyptic number.

It is an amenable number.

61249769408 is a deficient number, since it is larger than the sum of its proper divisors (60292741888).

61249769408 is an equidigital number, since it uses as much as digits as its factorization.

61249769408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957027659 (or 957027649 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 56.

The spelling of 61249769408 in words is "sixty-one billion, two hundred forty-nine million, seven hundred sixty-nine thousand, four hundred eight".