145621355634 has 36 divisors (see below), whose sum is σ = 327631433454. Its totient is φ = 48540447504.

The previous prime is 145621355629. The next prime is 145621355681. The reversal of 145621355634 is 436553126541.

It is a happy number.

145621355634 is a `hidden beast` number, since 1 + 4 + 5 + 6 + 2 + 1 + 3 + 5 + 5 + 634 = 666.

It can be written as a sum of positive squares in only one way, i.e., 74733890625 + 70887465009 = 273375^2 + 266247^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 145621355634.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 5535627 + ... + 5561870.

Almost surely, 2^145621355634 is an apocalyptic number.

145621355634 is an abundant number, since it is smaller than the sum of its proper divisors (182010077820).

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

145621355634 is an frugal number, since it uses more digits than its factorization.

145621355634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11097523 (or 11097502 counting only the distinct ones).

The product of its digits is 1296000, while the sum is 45.

The spelling of 145621355634 in words is "one hundred forty-five billion, six hundred twenty-one million, three hundred fifty-five thousand, six hundred thirty-four".