155407916947 has 16 divisors (see below), whose sum is σ = 157413934944. Its totient is φ = 153411840000.

The previous prime is 155407916897. The next prime is 155407917037. The reversal of 155407916947 is 749619704551.

It is a cyclic number.

It is not a de Polignac number, because 155407916947 - 2⁷ = 155407916819 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 155407916891 and 155407916900.

It is not an unprimeable number, because it can be changed into a prime (155407916647) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80479572 + ... + 80481502.

It is an arithmetic number, because the mean of its divisors is an integer number (9838370934).

Almost surely, 2^155407916947 is an apocalyptic number.

155407916947 is a deficient number, since it is larger than the sum of its proper divisors (2006017997).

155407916947 is a wasteful number, since it uses less digits than its factorization.

155407916947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3990.

The product of its (nonzero) digits is 9525600, while the sum is 58.

The spelling of 155407916947 in words is "one hundred fifty-five billion, four hundred seven million, nine hundred sixteen thousand, nine hundred forty-seven".