665147432742 has 32 divisors (see below), whose sum is σ = 1508026571520. Its totient is φ = 193889129760.

The previous prime is 665147432737. The next prime is 665147432767. The reversal of 665147432742 is 247234741566.

It is a super-2 number, since 2×665147432742² (a number of 24 digits) contains 22 as substring.

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, 224407234 + ... + 224410197.

It is an arithmetic number, because the mean of its divisors is an integer number (47125830360).

Almost surely, 2^665147432742 is an apocalyptic number.

665147432742 is an abundant number, since it is smaller than the sum of its proper divisors (842879138778).

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

665147432742 is a wasteful number, since it uses less digits than its factorization.

665147432742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 448817468.

The product of its digits is 6773760, while the sum is 51.

The spelling of 665147432742 in words is "six hundred sixty-five billion, one hundred forty-seven million, four hundred thirty-two thousand, seven hundred forty-two".