20351655551098 has 4 divisors (see below), whose sum is σ = 30527483326650. Its totient is φ = 10175827775548.

The previous prime is 20351655551089. The next prime is 20351655551107. The reversal of 20351655551098 is 89015555615302.

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

It is an interprime number because it is at equal distance from previous prime (20351655551089) and next prime (20351655551107).

It can be written as a sum of positive squares in only one way, i.e., 10389192293529 + 9962463257569 = 3223227^2 + 3156337^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5087913887773 + ... + 5087913887776.

Almost surely, 2^{20351655551098} is an apocalyptic number.

20351655551098 is a deficient number, since it is larger than the sum of its proper divisors (10175827775552).

20351655551098 is a wasteful number, since it uses less digits than its factorization.

20351655551098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10175827775551.

The product of its (nonzero) digits is 8100000, while the sum is 55.

The spelling of 20351655551098 in words is "twenty trillion, three hundred fifty-one billion, six hundred fifty-five million, five hundred fifty-one thousand, ninety-eight".