215154154146 has 32 divisors (see below), whose sum is σ = 435876249600. Its totient is φ = 70795737936.

The previous prime is 215154154133. The next prime is 215154154147. The reversal of 215154154146 is 641451451512.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (215154154147) 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, 557796 + ... + 861071.

It is an arithmetic number, because the mean of its divisors is an integer number (13621132800).

Almost surely, 2^215154154146 is an apocalyptic number.

215154154146 is an abundant number, since it is smaller than the sum of its proper divisors (220722095454).

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

215154154146 is a wasteful number, since it uses less digits than its factorization.

215154154146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1419198.

The product of its digits is 96000, while the sum is 39.

The spelling of 215154154146 in words is "two hundred fifteen billion, one hundred fifty-four million, one hundred fifty-four thousand, one hundred forty-six".