20401011402 has 32 divisors (see below), whose sum is σ = 42206330880. Its totient is φ = 6567203760.

The previous prime is 20401011391. The next prime is 20401011427. The reversal of 20401011402 is 20411010402.

It is a super-3 number, since 3×20401011402³ (a number of 32 digits) contains 333 as substring.

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, 25398 + ... + 203585.

It is an arithmetic number, because the mean of its divisors is an integer number (1318947840).

Almost surely, 2^20401011402 is an apocalyptic number.

20401011402 is an abundant number, since it is smaller than the sum of its proper divisors (21805319478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20401011402 is a wasteful number, since it uses less digits than its factorization.

20401011402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229498.

The product of its (nonzero) digits is 64, while the sum is 15.

Adding to 20401011402 its reverse (20411010402), we get a palindrome (40812021804).

The spelling of 20401011402 in words is "twenty billion, four hundred one million, eleven thousand, four hundred two".