21150036131434 has 32 divisors (see below), whose sum is σ = 36861389148672. Its totient is φ = 8913334176000.

The previous prime is 21150036131423. The next prime is 21150036131459. The reversal of 21150036131434 is 43413163005112.

It is a self number, because there is not a number n which added to its sum of digits gives 21150036131434.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80562 + ... + 6504349.

It is an arithmetic number, because the mean of its divisors is an integer number (1151918410896).

Almost surely, 2^{21150036131434} is an apocalyptic number.

21150036131434 is a deficient number, since it is larger than the sum of its proper divisors (15711353017238).

21150036131434 is a wasteful number, since it uses less digits than its factorization.

21150036131434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6588742.

The product of its (nonzero) digits is 25920, while the sum is 34.

Adding to 21150036131434 its reverse (43413163005112), we get a palindrome (64563199136546).

The spelling of 21150036131434 in words is "twenty-one trillion, one hundred fifty billion, thirty-six million, one hundred thirty-one thousand, four hundred thirty-four".