20150357636420 has 96 divisors (see below), whose sum is σ = 46287990628992. Its totient is φ = 7307513600000.

The previous prime is 20150357636407. The next prime is 20150357636443. The reversal of 20150357636420 is 2463675305102.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 442929875 + ... + 442975365.

It is an arithmetic number, because the mean of its divisors is an integer number (482166569052).

Almost surely, 2^{20150357636420} is an apocalyptic number.

20150357636420 is a gapful number since it is divisible by the number (20) 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 20150357636420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23143995314496).

20150357636420 is an abundant number, since it is smaller than the sum of its proper divisors (26137632992572).

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

20150357636420 is a wasteful number, since it uses less digits than its factorization.

20150357636420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50933 (or 50931 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 44.

The spelling of 20150357636420 in words is "twenty trillion, one hundred fifty billion, three hundred fifty-seven million, six hundred thirty-six thousand, four hundred twenty".