155070712420 has 72 divisors (see below), whose sum is σ = 360128329344. Its totient is φ = 56038589568.

The previous prime is 155070712403. The next prime is 155070712439. The reversal of 155070712420 is 24217070551.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 329214 + ... + 646933.

It is an arithmetic number, because the mean of its divisors is an integer number (5001782352).

Almost surely, 2^155070712420 is an apocalyptic number.

155070712420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

155070712420 is an abundant number, since it is smaller than the sum of its proper divisors (205057616924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

155070712420 is a wasteful number, since it uses less digits than its factorization.

155070712420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976229 (or 976214 counting only the distinct ones).

The product of its (nonzero) digits is 19600, while the sum is 34.

Adding to 155070712420 its reverse (24217070551), we get a palindrome (179287782971).

The spelling of 155070712420 in words is "one hundred fifty-five billion, seventy million, seven hundred twelve thousand, four hundred twenty".