49391951004 has 72 divisors (see below), whose sum is σ = 136333033200. Its totient is φ = 14952864000.

The previous prime is 49391950969. The next prime is 49391951029. The reversal of 49391951004 is 40015919394.

49391951004 is a `hidden beast` number, since 49 + 3 + 91 + 9 + 510 + 0 + 4 = 666.

It is a congruent number.

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, 355954 + ... + 474854.

It is an arithmetic number, because the mean of its divisors is an integer number (1893514350).

Almost surely, 2^49391951004 is an apocalyptic number.

49391951004 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49391951004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (68166516600).

49391951004 is an abundant number, since it is smaller than the sum of its proper divisors (86941082196).

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

49391951004 is a wasteful number, since it uses less digits than its factorization.

49391951004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 119971 (or 119966 counting only the distinct ones).

The product of its (nonzero) digits is 174960, while the sum is 45.

Adding to 49391951004 its sum of digits (45), we get a square (49391951049 = 222243²).

The spelling of 49391951004 in words is "forty-nine billion, three hundred ninety-one million, nine hundred fifty-one thousand, four".