901989359655 has 16 divisors (see below), whose sum is σ = 1443256488960. Its totient is φ = 481036487328.

The previous prime is 901989359641. The next prime is 901989359671. The reversal of 901989359655 is 556953989109.

It is not a de Polignac number, because 901989359655 - 2⁸ = 901989359399 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 901989359655.

It is a congruent number.

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, 1225267 + ... + 1818036.

It is an arithmetic number, because the mean of its divisors is an integer number (90203530560).

Almost surely, 2^901989359655 is an apocalyptic number.

901989359655 is a deficient number, since it is larger than the sum of its proper divisors (541267129305).

901989359655 is a wasteful number, since it uses less digits than its factorization.

901989359655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3063070.

The product of its (nonzero) digits is 118098000, while the sum is 69.

The spelling of 901989359655 in words is "nine hundred one billion, nine hundred eighty-nine million, three hundred fifty-nine thousand, six hundred fifty-five".