263421078974 has 8 divisors (see below), whose sum is σ = 395151485400. Its totient is φ = 131703917176.

The previous prime is 263421078887. The next prime is 263421079003. The reversal of 263421078974 is 479870124362.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3261284 + ... + 3341079.

It is an arithmetic number, because the mean of its divisors is an integer number (49393935675).

Almost surely, 2^263421078974 is an apocalyptic number.

263421078974 is a deficient number, since it is larger than the sum of its proper divisors (131730406426).

263421078974 is a wasteful number, since it uses less digits than its factorization.

263421078974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6622314.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 263421078974 in words is "two hundred sixty-three billion, four hundred twenty-one million, seventy-eight thousand, nine hundred seventy-four".