147661890426 has 24 divisors (see below), whose sum is σ = 320094381204. Its totient is φ = 49195970880.

The previous prime is 147661890421. The next prime is 147661890433. The reversal of 147661890426 is 624098166741.

147661890426 is a `hidden beast` number, since 1 + 4 + 76 + 61 + 8 + 90 + 426 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 108020682225 + 39641208201 = 328665^2 + 199101^2 .

It is a super-2 number, since 2×147661890426² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (147661890421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2017995 + ... + 2089886.

Almost surely, 2^147661890426 is an apocalyptic number.

147661890426 is an abundant number, since it is smaller than the sum of its proper divisors (172432490778).

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

147661890426 is a wasteful number, since it uses less digits than its factorization.

147661890426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4109886 (or 4109883 counting only the distinct ones).

The product of its (nonzero) digits is 3483648, while the sum is 54.

The spelling of 147661890426 in words is "one hundred forty-seven billion, six hundred sixty-one million, eight hundred ninety thousand, four hundred twenty-six".