21507006741398 has 8 divisors (see below), whose sum is σ = 33663140986608. Its totient is φ = 10285959745864.

The previous prime is 21507006741359. The next prime is 21507006741433. The reversal of 21507006741398 is 89314760070512.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 233771812361 + ... + 233771812452.

It is an arithmetic number, because the mean of its divisors is an integer number (4207892623326).

It is a 1-persistent number, because it is pandigital, but 2⋅21507006741398 = 43014013482796 is not.

Almost surely, 2^{21507006741398} is an apocalyptic number.

21507006741398 is a deficient number, since it is larger than the sum of its proper divisors (12156134245210).

21507006741398 is a wasteful number, since it uses less digits than its factorization.

21507006741398 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467543624838.

The product of its (nonzero) digits is 2540160, while the sum is 53.

The spelling of 21507006741398 in words is "twenty-one trillion, five hundred seven billion, six million, seven hundred forty-one thousand, three hundred ninety-eight".