145947432906 has 64 divisors (see below), whose sum is σ = 354012963840. Its totient is φ = 44201369520.

The previous prime is 145947432859. The next prime is 145947432947. The reversal of 145947432906 is 609234749541.

145947432906 is a `hidden beast` number, since 1 + 4 + 59 + 474 + 32 + 90 + 6 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 990201 + ... + 1128003.

It is an arithmetic number, because the mean of its divisors is an integer number (5531452560).

Almost surely, 2^145947432906 is an apocalyptic number.

145947432906 is an abundant number, since it is smaller than the sum of its proper divisors (208065530934).

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

145947432906 is a wasteful number, since it uses less digits than its factorization.

145947432906 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139608 (or 139602 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 145947432906 in words is "one hundred forty-five billion, nine hundred forty-seven million, four hundred thirty-two thousand, nine hundred six".