155415401798 has 8 divisors (see below), whose sum is σ = 240643202880. Its totient is φ = 75201000840.

The previous prime is 155415401797. The next prime is 155415401807. The reversal of 155415401798 is 897104514551.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155415401797) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1253349953 + ... + 1253350076.

It is an arithmetic number, because the mean of its divisors is an integer number (30080400360).

Almost surely, 2^155415401798 is an apocalyptic number.

155415401798 is a deficient number, since it is larger than the sum of its proper divisors (85227801082).

155415401798 is a wasteful number, since it uses less digits than its factorization.

155415401798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2506700062.

The product of its (nonzero) digits is 1008000, while the sum is 50.

The spelling of 155415401798 in words is "one hundred fifty-five billion, four hundred fifteen million, four hundred one thousand, seven hundred ninety-eight".