151000721100 has 144 divisors (see below), whose sum is σ = 495768268800. Its totient is φ = 39410084160.

The previous prime is 151000721083. The next prime is 151000721101. The reversal of 151000721100 is 1127000151.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (151000721101) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 468060 + ... + 721859.

It is an arithmetic number, because the mean of its divisors is an integer number (3442835200).

Almost surely, 2^151000721100 is an apocalyptic number.

151000721100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

151000721100 is an abundant number, since it is smaller than the sum of its proper divisors (344767547700).

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

151000721100 is a wasteful number, since it uses less digits than its factorization.

151000721100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1189989 (or 1189976 counting only the distinct ones).

The product of its (nonzero) digits is 70, while the sum is 18.

Adding to 151000721100 its reverse (1127000151), we get a palindrome (152127721251).

The spelling of 151000721100 in words is "one hundred fifty-one billion, seven hundred twenty-one thousand, one hundred".