47505021778820 has 48 divisors (see below), whose sum is σ = 99929463480000. Its totient is φ = 18969838677120.

The previous prime is 47505021778769. The next prime is 47505021778853. The reversal of 47505021778820 is 2887712050574.

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, 166975490 + ... + 167259750.

It is an arithmetic number, because the mean of its divisors is an integer number (2081863822500).

Almost surely, 2^{47505021778820} is an apocalyptic number.

It is an amenable number.

47505021778820 is an abundant number, since it is smaller than the sum of its proper divisors (52424441701180).

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

47505021778820 is a wasteful number, since it uses less digits than its factorization.

47505021778820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 298388 (or 298386 counting only the distinct ones).

The product of its (nonzero) digits is 8780800, while the sum is 56.

The spelling of 47505021778820 in words is "forty-seven trillion, five hundred five billion, twenty-one million, seven hundred seventy-eight thousand, eight hundred twenty".