155378292493 has 8 divisors (see below), whose sum is σ = 155844954720. Its totient is φ = 154912087440.

The previous prime is 155378292457. The next prime is 155378292497. The reversal of 155378292493 is 394292873551.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 155378292493 - 2³⁷ = 17939339021 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155378292497) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 572638 + ... + 799168.

It is an arithmetic number, because the mean of its divisors is an integer number (19480619340).

Almost surely, 2^155378292493 is an apocalyptic number.

It is an amenable number.

155378292493 is a deficient number, since it is larger than the sum of its proper divisors (466662227).

155378292493 is a wasteful number, since it uses less digits than its factorization.

155378292493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 228587.

The product of its digits is 16329600, while the sum is 58.

The spelling of 155378292493 in words is "one hundred fifty-five billion, three hundred seventy-eight million, two hundred ninety-two thousand, four hundred ninety-three".