155415386494 has 8 divisors (see below), whose sum is σ = 233200205280. Its totient is φ = 77681984736.

The previous prime is 155415386479. The next prime is 155415386501. The reversal of 155415386494 is 494683514551.

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

It is a super-2 number, since 2×155415386494² (a number of 23 digits) contains 22 as substring.

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, 12846699 + ... + 12858790.

It is an arithmetic number, because the mean of its divisors is an integer number (29150025660).

Almost surely, 2^155415386494 is an apocalyptic number.

155415386494 is a deficient number, since it is larger than the sum of its proper divisors (77784818786).

155415386494 is a wasteful number, since it uses less digits than its factorization.

155415386494 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25708514.

The product of its digits is 10368000, while the sum is 55.

The spelling of 155415386494 in words is "one hundred fifty-five billion, four hundred fifteen million, three hundred eighty-six thousand, four hundred ninety-four".