215010231454 has 4 divisors (see below), whose sum is σ = 322515347184. Its totient is φ = 107505115726.

The previous prime is 215010231451. The next prime is 215010231481. The reversal of 215010231454 is 454132010512.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215010231451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53752557862 + ... + 53752557865.

It is an arithmetic number, because the mean of its divisors is an integer number (80628836796).

Almost surely, 2^215010231454 is an apocalyptic number.

215010231454 is a deficient number, since it is larger than the sum of its proper divisors (107505115730).

215010231454 is a wasteful number, since it uses less digits than its factorization.

215010231454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107505115729.

The product of its (nonzero) digits is 4800, while the sum is 28.

Adding to 215010231454 its reverse (454132010512), we get a palindrome (669142241966).

The spelling of 215010231454 in words is "two hundred fifteen billion, ten million, two hundred thirty-one thousand, four hundred fifty-four".