47639139520 has 112 divisors (see below), whose sum is σ = 129843263808. Its totient is φ = 16308633600.

The previous prime is 47639139487. The next prime is 47639139599. The reversal of 47639139520 is 2593193674.

It is a tau number, because it is divible by the number of its divisors (112).

It is a super-2 number, since 2×47639139520² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1491720 + ... + 1523320.

Almost surely, 2^47639139520 is an apocalyptic number.

47639139520 is a gapful number since it is divisible by the number (40) 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 47639139520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (64921631904).

47639139520 is an abundant number, since it is smaller than the sum of its proper divisors (82204124288).

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

47639139520 is a wasteful number, since it uses less digits than its factorization.

47639139520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32298 (or 32288 counting only the distinct ones).

The product of its (nonzero) digits is 1224720, while the sum is 49.

The spelling of 47639139520 in words is "forty-seven billion, six hundred thirty-nine million, one hundred thirty-nine thousand, five hundred twenty".