69491991480 has 32 divisors (see below), whose sum is σ = 208475974800. Its totient is φ = 18531197696.

The previous prime is 69491991469. The next prime is 69491991493. The reversal of 69491991480 is 8419919496.

It is a Harshad number since it is a multiple of its sum of digits (60).

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, 289549845 + ... + 289550084.

Almost surely, 2^69491991480 is an apocalyptic number.

69491991480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

69491991480 is an abundant number, since it is smaller than the sum of its proper divisors (138983983320).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

69491991480 is a wasteful number, since it uses less digits than its factorization.

69491991480 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579099943 (or 579099939 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 60.

The spelling of 69491991480 in words is "sixty-nine billion, four hundred ninety-one million, nine hundred ninety-one thousand, four hundred eighty".