145861633740 has 24 divisors (see below), whose sum is σ = 408412574640. Its totient is φ = 38896435648.

The previous prime is 145861633733. The next prime is 145861633759. The reversal of 145861633740 is 47336168541.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 145861633740.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1215513555 + ... + 1215513674.

It is an arithmetic number, because the mean of its divisors is an integer number (17017190610).

Almost surely, 2^145861633740 is an apocalyptic number.

145861633740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145861633740 is an abundant number, since it is smaller than the sum of its proper divisors (262550940900).

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

145861633740 is a wasteful number, since it uses less digits than its factorization.

145861633740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2431027241 (or 2431027239 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 145861633740 in words is "one hundred forty-five billion, eight hundred sixty-one million, six hundred thirty-three thousand, seven hundred forty".