20988430970 has 32 divisors (see below), whose sum is σ = 40815330192. Its totient is φ = 7724800512.

The previous prime is 20988430949. The next prime is 20988431003. The reversal of 20988430970 is 7903488902.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 5464018561 + 15524412409 = 73919^2 + 124597^2 .

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, 217217 + ... + 298596.

Almost surely, 2^20988430970 is an apocalyptic number.

20988430970 is a deficient number, since it is larger than the sum of its proper divisors (19826899222).

20988430970 is a wasteful number, since it uses less digits than its factorization.

20988430970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 516146.

The product of its (nonzero) digits is 870912, while the sum is 50.

The spelling of 20988430970 in words is "twenty billion, nine hundred eighty-eight million, four hundred thirty thousand, nine hundred seventy".