49998671970 has 96 divisors (see below), whose sum is σ = 130887643392. Its totient is φ = 12217360896.

The previous prime is 49998671953. The next prime is 49998671971. The reversal of 49998671970 is 7917689994.

It is a junction number, because it is equal to n+sod(n) for n = 49998671895 and 49998671904.

It is not an unprimeable number, because it can be changed into a prime (49998671971) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 658599 + ... + 730581.

It is an arithmetic number, because the mean of its divisors is an integer number (1363412952).

Almost surely, 2^49998671970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49998671970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (65443821696).

49998671970 is an abundant number, since it is smaller than the sum of its proper divisors (80888971422).

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

49998671970 is a wasteful number, since it uses less digits than its factorization.

49998671970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72156 (or 72143 counting only the distinct ones).

The product of its (nonzero) digits is 61725888, while the sum is 69.

The spelling of 49998671970 in words is "forty-nine billion, nine hundred ninety-eight million, six hundred seventy-one thousand, nine hundred seventy".