403640687485 has 8 divisors (see below), whose sum is σ = 553564371456. Its totient is φ = 276782185680.

The previous prime is 403640687473. The next prime is 403640687503. The reversal of 403640687485 is 584786046304.

It is a happy number.

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

It is not a de Polignac number, because 403640687485 - 2¹⁹ = 403640163197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5766295501 + ... + 5766295570.

It is an arithmetic number, because the mean of its divisors is an integer number (69195546432).

Almost surely, 2^403640687485 is an apocalyptic number.

It is an amenable number.

403640687485 is a deficient number, since it is larger than the sum of its proper divisors (149923683971).

403640687485 is a wasteful number, since it uses less digits than its factorization.

403640687485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11532591083.

The product of its (nonzero) digits is 15482880, while the sum is 55.

The spelling of 403640687485 in words is "four hundred three billion, six hundred forty million, six hundred eighty-seven thousand, four hundred eighty-five".