49239257964 has 72 divisors (see below), whose sum is σ = 124536565440. Its totient is φ = 15135037632.

The previous prime is 49239257957. The next prime is 49239257981. The reversal of 49239257964 is 46975293294.

It is a junction number, because it is equal to n+sod(n) for n = 49239257898 and 49239257907.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2054619 + ... + 2078445.

It is an arithmetic number, because the mean of its divisors is an integer number (1729674520).

Almost surely, 2^49239257964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49239257964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (62268282720).

49239257964 is an abundant number, since it is smaller than the sum of its proper divisors (75297307476).

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

49239257964 is a wasteful number, since it uses less digits than its factorization.

49239257964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24879 (or 24864 counting only the distinct ones).

The product of its digits is 29393280, while the sum is 60.

The spelling of 49239257964 in words is "forty-nine billion, two hundred thirty-nine million, two hundred fifty-seven thousand, nine hundred sixty-four".