20026620542 has 8 divisors (see below), whose sum is σ = 30048256056. Its totient is φ = 10010535192.

The previous prime is 20026620541. The next prime is 20026620547. The reversal of 20026620542 is 24502662002.

It is a happy number.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20026620541) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1378508 + ... + 1392959.

It is an arithmetic number, because the mean of its divisors is an integer number (3756032007).

Almost surely, 2^20026620542 is an apocalyptic number.

20026620542 is a deficient number, since it is larger than the sum of its proper divisors (10021635514).

20026620542 is a wasteful number, since it uses less digits than its factorization.

20026620542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2775082.

The product of its (nonzero) digits is 11520, while the sum is 29.

The spelling of 20026620542 in words is "twenty billion, twenty-six million, six hundred twenty thousand, five hundred forty-two".