403646897954961 has 40 divisors (see below), whose sum is σ = 606685175061504. Its totient is φ = 267443841653280.

The previous prime is 403646897954933. The next prime is 403646897955011. The reversal of 403646897954961 is 169459798646304.

403646897954961 is a `hidden beast` number, since 4 + 0 + 3 + 6 + 4 + 6 + 8 + 9 + 7 + 9 + 549 + 61 = 666.

It is not a de Polignac number, because 403646897954961 - 2¹³ = 403646897946769 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is not an unprimeable number, because it can be changed into a prime (403646893954961) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1738864275 + ... + 1739096391.

Almost surely, 2^{403646897954961} is an apocalyptic number.

It is an amenable number.

403646897954961 is a deficient number, since it is larger than the sum of its proper divisors (203038277106543).

403646897954961 is a wasteful number, since it uses less digits than its factorization.

403646897954961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364003 (or 363994 counting only the distinct ones).

The product of its (nonzero) digits is 8465264640, while the sum is 81.

The spelling of 403646897954961 in words is "four hundred three trillion, six hundred forty-six billion, eight hundred ninety-seven million, nine hundred fifty-four thousand, nine hundred sixty-one".