155036643398 has 64 divisors (see below), whose sum is σ = 303562570752. Its totient is φ = 57704676480.

The previous prime is 155036643343. The next prime is 155036643413. The reversal of 155036643398 is 893346630551.

It is a super-2 number, since 2×155036643398² (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 31 ways as a sum of consecutive naturals, for example, 48236 + ... + 558927.

It is an arithmetic number, because the mean of its divisors is an integer number (4743165168).

Almost surely, 2^155036643398 is an apocalyptic number.

155036643398 is a deficient number, since it is larger than the sum of its proper divisors (148525927354).

155036643398 is a wasteful number, since it uses less digits than its factorization.

155036643398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607269.

The product of its (nonzero) digits is 6998400, while the sum is 53.

The spelling of 155036643398 in words is "one hundred fifty-five billion, thirty-six million, six hundred forty-three thousand, three hundred ninety-eight".