20149594698 has 16 divisors (see below), whose sum is σ = 40300685856. Its totient is φ = 6716282160.

The previous prime is 20149594697. The next prime is 20149594723. The reversal of 20149594698 is 89649594102.

It is a super-2 number, since 2×20149594698² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (20149594691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 193365 + ... + 278727.

It is an arithmetic number, because the mean of its divisors is an integer number (2518792866).

Almost surely, 2^20149594698 is an apocalyptic number.

20149594698 is an abundant number, since it is smaller than the sum of its proper divisors (20151091158).

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

20149594698 is a wasteful number, since it uses less digits than its factorization.

20149594698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 124709.

The product of its (nonzero) digits is 5598720, while the sum is 57.

The spelling of 20149594698 in words is "twenty billion, one hundred forty-nine million, five hundred ninety-four thousand, six hundred ninety-eight".