47155437420 has 384 divisors, whose sum is σ = 176274911232. Its totient is φ = 9134899200.

The previous prime is 47155437293. The next prime is 47155437457. The reversal of 47155437420 is 2473455174.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 3799425 + ... + 3811815.

It is an arithmetic number, because the mean of its divisors is an integer number (459049248).

Almost surely, 2^47155437420 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 47155437420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88137455616).

47155437420 is an abundant number, since it is smaller than the sum of its proper divisors (129119473812).

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

47155437420 is a wasteful number, since it uses less digits than its factorization.

47155437420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12481 (or 12479 counting only the distinct ones).

The product of its (nonzero) digits is 470400, while the sum is 42.

The spelling of 47155437420 in words is "forty-seven billion, one hundred fifty-five million, four hundred thirty-seven thousand, four hundred twenty".