20401536270 has 32 divisors (see below), whose sum is σ = 49234217760. Its totient is φ = 5410350720.

The previous prime is 20401536257. The next prime is 20401536343. The reversal of 20401536270 is 7263510402.

It is a super-2 number, since 2×20401536270² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

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, 1873165 + ... + 1884024.

It is an arithmetic number, because the mean of its divisors is an integer number (1538569305).

Almost surely, 2^20401536270 is an apocalyptic number.

20401536270 is an abundant number, since it is smaller than the sum of its proper divisors (28832681490).

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

20401536270 is a wasteful number, since it uses less digits than its factorization.

20401536270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3757380.

The product of its (nonzero) digits is 10080, while the sum is 30.

The spelling of 20401536270 in words is "twenty billion, four hundred one million, five hundred thirty-six thousand, two hundred seventy".