90138281937401 has 8 divisors (see below), whose sum is σ = 91485216367104. Its totient is φ = 88791394182480.

The previous prime is 90138281937377. The next prime is 90138281937413. The reversal of 90138281937401 is 10473918283109.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90138281937401 - 2²² = 90138277743097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90138281937491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7767770 + ... + 15511763.

It is an arithmetic number, because the mean of its divisors is an integer number (11435652045888).

Almost surely, 2^{90138281937401} is an apocalyptic number.

It is an amenable number.

90138281937401 is a deficient number, since it is larger than the sum of its proper divisors (1346934429703).

90138281937401 is a wasteful number, since it uses less digits than its factorization.

90138281937401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23337391.

The product of its (nonzero) digits is 2612736, while the sum is 56.

The spelling of 90138281937401 in words is "ninety trillion, one hundred thirty-eight billion, two hundred eighty-one million, nine hundred thirty-seven thousand, four hundred one".