20195961010 has 16 divisors (see below), whose sum is σ = 36712659672. Its totient is φ = 7998400000.

The previous prime is 20195960999. The next prime is 20195961017. The reversal of 20195961010 is 1016959102.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 19042068049 + 1153892961 = 137993^2 + 33969^2 .

It is a super-2 number, since 2×20195961010² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20195961017) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9996991 + ... + 9999010.

Almost surely, 2^20195961010 is an apocalyptic number.

20195961010 is a deficient number, since it is larger than the sum of its proper divisors (16516698662).

20195961010 is a wasteful number, since it uses less digits than its factorization.

20195961010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19996109.

The product of its (nonzero) digits is 4860, while the sum is 34.

The spelling of 20195961010 in words is "twenty billion, one hundred ninety-five million, nine hundred sixty-one thousand, ten".