155415050415 has 24 divisors (see below), whose sum is σ = 281098527840. Its totient is φ = 79284199104.

The previous prime is 155415050411. The next prime is 155415050429. The reversal of 155415050415 is 514050514551.

155415050415 is a `hidden beast` number, since 1 + 5 + 541 + 50 + 50 + 4 + 15 = 666.

It is not a de Polignac number, because 155415050415 - 2² = 155415050411 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 155415050415.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (155415050411) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 75078700 + ... + 75080769.

It is an arithmetic number, because the mean of its divisors is an integer number (11712438660).

Almost surely, 2^155415050415 is an apocalyptic number.

155415050415 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

155415050415 is a deficient number, since it is larger than the sum of its proper divisors (125683477425).

155415050415 is a wasteful number, since it uses less digits than its factorization.

155415050415 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150159503 (or 150159500 counting only the distinct ones).

The product of its (nonzero) digits is 50000, while the sum is 36.

Adding to 155415050415 its reverse (514050514551), we get a palindrome (669465564966).

The spelling of 155415050415 in words is "one hundred fifty-five billion, four hundred fifteen million, fifty thousand, four hundred fifteen".