21416077634 has 16 divisors (see below), whose sum is σ = 37897575936. Its totient is φ = 8882244000.

The previous prime is 21416077621. The next prime is 21416077649. The reversal of 21416077634 is 43677061412.

It is a junction number, because it is equal to n+sod(n) for n = 21416077591 and 21416077600.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24672467 + ... + 24673334.

It is an arithmetic number, because the mean of its divisors is an integer number (2368598496).

Almost surely, 2^21416077634 is an apocalyptic number.

21416077634 is a deficient number, since it is larger than the sum of its proper divisors (16481498302).

21416077634 is a wasteful number, since it uses less digits than its factorization.

21416077634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49345841.

The product of its (nonzero) digits is 169344, while the sum is 41.

The spelling of 21416077634 in words is "twenty-one billion, four hundred sixteen million, seventy-seven thousand, six hundred thirty-four".