38998994545 has 16 divisors (see below), whose sum is σ = 54003605760. Its totient is φ = 26482532544.

The previous prime is 38998994509. The next prime is 38998994563. The reversal of 38998994545 is 54549989983.

It is a cyclic number.

It is not a de Polignac number, because 38998994545 - 2²¹ = 38996897393 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5405410 + ... + 5412619.

It is an arithmetic number, because the mean of its divisors is an integer number (3375225360).

Almost surely, 2^38998994545 is an apocalyptic number.

38998994545 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

38998994545 is a deficient number, since it is larger than the sum of its proper divisors (15004611215).

38998994545 is a wasteful number, since it uses less digits than its factorization.

38998994545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10818144.

The product of its digits is 503884800, while the sum is 73.

The spelling of 38998994545 in words is "thirty-eight billion, nine hundred ninety-eight million, nine hundred ninety-four thousand, five hundred forty-five".