150540552621 has 48 divisors (see below), whose sum is σ = 227928792000. Its totient is φ = 99281635200.

The previous prime is 150540552619. The next prime is 150540552697. The reversal of 150540552621 is 126255045051.

150540552621 is a `hidden beast` number, since 1 + 5 + 0 + 5 + 40 + 552 + 62 + 1 = 666.

It is not a de Polignac number, because 150540552621 - 2¹ = 150540552619 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (150540552121) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 43022130 + ... + 43025628.

It is an arithmetic number, because the mean of its divisors is an integer number (4748516500).

Almost surely, 2^150540552621 is an apocalyptic number.

It is an amenable number.

150540552621 is a deficient number, since it is larger than the sum of its proper divisors (77388239379).

150540552621 is a wasteful number, since it uses less digits than its factorization.

150540552621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5368 (or 5356 counting only the distinct ones).

The product of its (nonzero) digits is 60000, while the sum is 36.

Adding to 150540552621 its reverse (126255045051), we get a palindrome (276795597672).

The spelling of 150540552621 in words is "one hundred fifty billion, five hundred forty million, five hundred fifty-two thousand, six hundred twenty-one".