149917003621 has 24 divisors (see below), whose sum is σ = 194819506560. Its totient is φ = 112790203680.

The previous prime is 149917003507. The next prime is 149917003627. The reversal of 149917003621 is 126300719941.

It is not a de Polignac number, because 149917003621 - 2¹¹ = 149917001573 is a prime.

It is a super-2 number, since 2×149917003621² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (149917003627) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3027121 + ... + 3076246.

It is an arithmetic number, because the mean of its divisors is an integer number (8117479440).

Almost surely, 2^149917003621 is an apocalyptic number.

149917003621 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

149917003621 is a deficient number, since it is larger than the sum of its proper divisors (44902502939).

149917003621 is a wasteful number, since it uses less digits than its factorization.

149917003621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6103425 (or 6103414 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The spelling of 149917003621 in words is "one hundred forty-nine billion, nine hundred seventeen million, three thousand, six hundred twenty-one".